ESX Patches – Resolve SAN LUN Issue

In a previous article I discuss how an ESX host can halt if LUN metadata updates are done the same time a LUN path fails. Thankfully VMware has released a patch for this problem, along with a few others. I strongly suggest you to upgrade if your running VMware ESX 3.5 U3 and block level storage.

ESX350-200901401-SG – PATCH – Security – KB 1006651 – Updates VMkernel VMX hostd. But most important fix that this patch contains definitely is: VMware ESX and ESXi 3.5 U3 I/O failure on SAN LUNs, and LUN queue is blocked indefinitely. For a full description of this issue, see